fort jefferson in dry tortugas national park, florida keys

all and arches architecture barracks beaches bricks buildings built casemate civil coast confederate constructed coral destinations dry entrance era florida fort fortification fortifications fortress garden girl historic historical history interior intricately islands isolated jefferson key keys landmark located memorial military moat monument most national ocean old outdoors park parks people perhaps person places port reef ruins sally sand scenic sea seascape soldier states straits structure sun tortugas tourism travel union united vacation war warfare water